54 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Target: Antigen-Ab ... Dermatitis (ie. reaction ... #Allergic #Reactions ... #Types #Classification ... #Diagnosis #Definitions
Allergic Reaction Classification
Type 1 reaction: Acute anaphylactic reaction
Type 2 reaction: Cytotoxic reaction
Type 3 reaction: Immune complex
Type
Allergic Reaction ... Classification ... #Allergic #Reaction ... #Classification ... #diagnosis
Erythema Ab Igne on Physical Exam

Erythema ab igne (EAI) is a skin reaction caused by chronic
Erythema Ab Igne ... Exam Erythema ab ... skin reaction caused ... EAI #Erythema #Ab ... #Igne #AbIgne #
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
cell surfaces causes ... An allergic reaction ... #Allergic #Reactions ... #Types #Classification ... #Diagnosis #Definitions
Angioedema - Classification Diagnosis and Treatment
Types of Angioedema:
 • Acute allergic angioedema - Usually occurs with
Angioedema - Classification ... Diagnosis and Treatment ... drug reaction - ... cell-mediated in > 90% of cases ... #Types #Diagnosis
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
: - Drug reaction ... infection - Allergic ... reaction - Atopic ... + T cells) - Allergic ... #Differential #Diagnosis
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
hypersensitivity reactions ... lgE causes mast-cell ... Acute transfusion reaction ... hypersensitivity #reactions ... #table #classification
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
- Differential Diagnosis ... syndrome, POEMS • Reaction ... post-splenectomy, Exercise, Allergic ... reactions Matthew ... #Differential #Diagnosis
Basophilia - Differential Diagnosis Framework

Basophils < 1% of the total white blood cell count
Basophils function similarly
- Differential Diagnosis ... released during an allergic ... reaction or asthma ... Or Inflammatory Reactions ... #causes #hematology
Uveitis - Definition, Causes and SUN Classification

Inflammation of the iris, ciliary body, vitreous, retina and/or choroid
Incidence
and SUN Classification ... Bartonella SUN Classification ... #SUN #Classification ... #Differential #Diagnosis ... Ophthalmology #Rheumatology